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Construction hoist with optical monitoring device

  • US 6,615,953 B1
  • Filed: 08/08/2000
  • Issued: 09/09/2003
  • Est. Priority Date: 02/07/1998
  • Status: Expired due to Fees
First Claim
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1. A building elevator having an elevator mast, which can be set up vertically, and having an elevator car which can be moved in the vertical direction along the elevator mast and has at least one motor drive with control means, said building elevator (1), comprising:

  • an optical monitoring device which monitors space above the elevator platform set up on a ground surface a control means of the motor drive wherein send optical monitoring device is connected to the control means wherein the motor drive can be stopped, at least during downward travel of the elevator car, when the space above the elevator platform is not free.

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